Oyo-Ile

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North of the Yoruba forest the high woodland thins and breaks into open grass, and on that grass a horse can live. The tsetse fly that kills cattle and cavalry alike within a season grows scarce there, and a town placed on the savanna edge could do what the forest towns to the south could not: it could keep horses, breed them, ride them. On a low rise watered by small tributaries of the Niger, in the extreme northwest of what later became Yorubaland, such a town grew into the seat of an empire. The Yoruba tradition calls it Ọ̀yọ́-Ilé — Oyo of the home, the original Oyo — and the explorers who reached it in the nineteenth century wrote it as Old Oyo, or, in the Hausa rendering, Katunga. Today it is an expanse of overgrown earthworks inside a national park, the walls still legible under the bush, the throne-city emptied of the throne that named it.

A surviving stretch of the earthwork city wall at Oyo-Ile (Old Oyo), Oyo State, Nigeria — Ifecenticpolity via Wikimedia Commons (CC BY-SA 4.0)

The city the cavalry built

The founding belongs partly to record and partly to the praise-poetry that carries Yoruba memory. The chronicle compiled in the 1890s by the Reverend Samuel Johnson from the arokin — the hereditary court historians of Oyo — names the founder as Oranmiyan, a prince of the line of Ilé-Ifẹ̀, the older ritual cradle to the south from which, in the founding mythography, the Yoruba royal lineages radiated outward. From Ile-Ife came the crown’s legitimacy; Ife was never an empire, only the place a crown had to come from. Oranmiyan, the tradition holds, first attempted a capital elsewhere and then settled the dynasty at Oyo-Ile, taking the title alaafin — owner of the palace. The legendary chronology places that founding around the fourteenth century. The imperial polity that historians reconstruct from the documentary record takes firmer shape from about 1600, reaching its height in the eighteenth century, when Oyo’s mounted lancers rode down into the lighter savanna and the trade corridors of the coast and made a town into the widest of the Yoruba states.

Everything at Oyo-Ile was organized around that one geographic fact. The horse could be stabled where the fly was thin; the open ground around the city let the cavalry maneuver; and the walls had to enclose not only the houses but the fields and the herds that fed them. The mounts themselves came down the Sudanic trade routes from the north, the same arteries that for centuries had carried salt and gold and a slow contact with the Muslim world across the grass — so the city’s location was a hinge, holding the savanna’s horse-trade on one side and the forest’s wealth on the other. A town that could buy horses, keep them alive, and ride them where its rivals could not was a town positioned to become an empire, and Oyo-Ile was built exactly on that seam. So the site grew vast. Three concentric earthwork enclosures ringed the city in packed earth and ditch. The innermost, around the palace quarter the Yoruba call the Àfin, ran some seven and a half kilometers and enclosed roughly two hundred hectares — the working core, the palace and its compounds and a reservoir. Beyond it two outer walls, of about eighteen and twenty-eight kilometers, swept around nearly three thousand hectares of settlement and farmland. When the Scottish explorer Hugh Clapperton reached the city in 1826 he found it still standing and described the wall as about twenty feet high, fronted by a dry ditch, pierced by ten gates, and some fifteen miles in circumference. It was among the largest urban enclosures in West Africa, a thing built not in a single campaign but accreted over generations as the city and its empire swelled.

A constitution written in ritual

What the walls held was not only a city but a constitution — and it is for the working of that constitution that the ground plan of Oyo-Ile matters as something more than archaeology. The alaafin was a sacred king, hedged from ordinary sight, his face carrying a charge that ordinary men were not to meet; he ate alone, appeared rarely, and stood at the center of an elaborate ritual order. And yet his power was deliberately caged. The plan of the city set the palace of the alaafin against the council-house of the men who could unmake him.

That council was the Òyó Mèsì, seven principal state officers led by the Basọrun, who functioned at once as a kind of prime minister and as head of the kingmakers. The Oyo Mesi chose each new alaafin from among the eligible princes, and they kept a terrible reserve power over the one they had chosen: when they judged that a king had lost the confidence of the realm — that the orisha and the people had turned from him — the Basọrun could present him the recognized signal of rejection, after which the king was expected to take his own life rather than be deposed. Against the Oyo Mesi stood a second counterweight, the Ọgbóni, a society of senior elders bound to the cult of the earth, custodians of the land’s sanctity and of judicial gravity, who could check both king and council. Where the Oyo Mesi spoke for the political aristocracy, the Ogboni spoke with the authority of the earth itself. A king who could play one body against the other survived; a king caught between them did not. The balance was real, and at Oyo-Ile it had an address: the palace, the council-house, and the lodge of the earth-cult were distinct seats of distinct powers, and the city was the room in which they contended.

Over the army a parallel firewall was built into the geography. The provincial forces answered to a field commander, the Are-Ona-Kakanfo, who by custom was kept away from the capital and forbidden to enter it under arms — a deliberate separation between the man who held the army and the man who held the throne. The same logic ran outward from the capital into the empire. The alaafin’s word reached the subject towns through resident agents and through royal messengers marked as his own, so that the city was not only a seat but a switchboard, the point from which surveillance and tribute fanned across the reach of the Oyo Empire. It was a constitution famous among the Yoruba states for its checks, and the ruin preserves its outline: a city laid out so that no single power could swallow the rest. Where many capitals are remembered for a king, Oyo-Ile is remembered for the balance — the plan on the ground is the diagram of a state that took care to bind its own ruler.

The home of the thunder-king

Oyo-Ile was also the home of a god. The state cult of the empire was the cult of Ṣàngó — the orisha of thunder, lightning, and the justice that falls from the sky — and within the walls stood his shrine and the sacred ground that the later survey calls the Songo (Sango) Shrine, set near the place named Koso. In Yoruba tradition Sango was no abstract sky-power but a king: an early alaafin of Oyo, a ruler of fierce temper and command over fire, who after his fall was deified. The cry raised in his honor, Ọba kò so — “the king did not hang” — denies an ordinary death even as it consecrates the god, for the king did not die but ascended. The full theology of Shango belongs to the wider Yoruba religious world; what belongs to the city is that the reigning alaafin was understood as the living heir of a deified king, and the thunder that split a roof was Sango’s own judgment. To venerate Sango was to acknowledge the dynasty, and the dynasty’s god kept his house in the dynasty’s capital.

Oṣé Ṣàngó, a carved dance-wand from the Oyo region whose double-axe blade represents the thunderbolt — Cliff1066 via Wikimedia Commons (CC BY 2.0)

That god stood within a fuller pantheon and a fuller theology — the high source Olodumare behind all of it, the clay-shaping Obatala, the divination corpus carried by Orunmila and his diviners, the crossroads-keeper Eshu — a world treated on its own terms in the òrìṣà entries and exceeding the political story of any one city. But Oyo-Ile gave that world a political center. The sacred groves, the shrine of the thunder-orisha, the Koso ground, the royal mausoleum the survey records as the Bara — where the alaafin of the imperial era were laid — and the great market the Yoruba call Akesan: these were not adornments to the capital but the capital’s working organs, the places where the religion of the state was kept and where the king’s authority was renewed.

The emptying of the city

The fall came from several directions at once, and it came fast. To the north the Fulani jihad that raised the Sokoto Caliphate after 1804 set a militant Islamic frontier hard against Oyo’s vulnerable marches, where the empire’s northern provinces — around Ilorin especially — held substantial Muslim populations whose loyalties the wars would turn. Inside the empire, the war commander Afonja, holder of the very office built to be kept at arm’s length from the throne, broke with the alaafin and around 1817 raised Ilorin in revolt. The instrument turned in the hand. Afonja was killed by his own jihadist allies, and Ilorin, rather than returning to Oyo, was absorbed into the Caliphate and became a base from which mounted raiders harried the heartland. By the mid-1820s the cavalry empire was suffering a shortage of the very horses that had made it; the contact with Islam that had once carried Oyo its mounts now carried its undoing. Tributaries fell away, and the Yoruba country dissolved into a generation of war among the successor states.

Around 1835 the forces out of Ilorin broke the capital itself. The people did not wait to be killed. Nearly all of them packed what they could and fled south, abandoning the city to the bush, and the throne-city of the savanna was left empty — the date the sources fix at about 1835, which the heritage record sometimes renders as about 1837. A remnant of the dynasty refounded the capital far to the south, where the alaafin Atiba established a new town in the 1830s on the site of a small settlement called Ago. That town — modern Oyo, near latitude 7.85 north and longitude 3.93 east, some fifty kilometers north of Ibadan — carries the title and the crown to this day. The name and the kingship moved with the people; the old city, more than a hundred kilometers to the north, became a ruin. The Yoruba mark the distinction in the names themselves: Ọ̀yọ́-Ilé, the old Oyo, against Ọ̀yọ́ Àtìbà, the new Oyo of Atiba.

The site recovered by the spade

The memory of the city survived the city. The arokin kept the dynastic narrative in oral verse; the praise-poetry of the alaafin held the names and the deeds; and when the Anglican pastor Samuel Johnson, himself of Oyo descent, set that tradition down in writing across the 1880s and 1890s, the chronicle he produced became the standard reference for the deified-king character of Sango and for the line of the throne. Johnson wrote within an explicit Anglican civilizational frame, in the print culture that the Christian missions and the returnee communities had brought to the Yoruba coast — the same milieu in which the wider contact between Yoruba tradition and Christianity was being negotiated — and his account leans, naturally, toward the prestige of the imperial capital his own people came from. The modern record reads that chronicle critically and sets it beside what the earth has yielded.

For what the songs preserved as memory the ground preserved as form, and from the mid-twentieth century the form was traced by archaeologists. Investigation at the deserted site reaches back to the 1930s; the art historian Frank Willett, later known for his work on the Ife sculptures, excavated at Oyo-Ile in the later 1950s, opening the question of the city’s material record. The walls themselves — the feature that most defines the site — were surveyed and mapped by Robert Soper and Patrick Darling, whose study “The Walls of Oyo-Ile” appeared in the West African Journal of Archaeology in 1980 and set the lengths and circuits of the three enclosures against the topography. The later interdisciplinary fieldwork that revisited the site through the 1980s and into the 2000s carried the survey of compounds, gates, and the palace forward, reading the plan of the imperial city out of the overgrown earth. The transdisciplinary synthesis of Yoruba history by the archaeologist Akinwumi Ogundiran now braids that excavated record with the oral tradition and the linguistic evidence, so that the chronicle Johnson took from the arokin is read alongside what the spade has found.

The ruin sits today within Old Oyo National Park, a protected expanse of some 2,512 square kilometers across the north of Oyo State and into Kwara State, drained by the Owu, Owe, Ogun, and Tessi rivers and broken in its northeast by the granite outcrops, caves, and rock shelters that the old city used. The park grew out of forest and game reserves first set aside in the 1930s and 1940s and was raised to national-park status in the later twentieth century; it takes its name from the dead capital it contains. Within it the survey counts more than a score of historical sites of the imperial city — the palace ground of the Àfin, the Akesan market square, the Agbaku and Mejiro caves, the Sango shrine, the Koso, the Bara tomb of the alaafin, and the long defensive walls. Nigeria has placed Old Oyo on the tentative list of World Heritage sites, describing it as a deserted city whose inner enclosure ringed the palace and a reservoir within two hundred hectares, and whose outer walls and ditches enclosed nearly three thousand. The savanna that fed the horses has long since taken the streets back, but the walls hold the plan, and the plan holds the constitution — palace, council, and earth-cult — that once made the city the working heart of an empire. The crown went south and the name went with it; the ground kept the shape of the thing that left.

→ Related: The Oyo Empire · Shango · The Yoruba · Ile Ife · Osun Osogbo · Idanre Hills · Olodumare · Obatala · Orunmila · Eshu · The Fon · Divination · Islam · Christianity